With carrier: Lyophilized from a 0.22 μm filtered solution of PBS, pH 7.2 containing 20 μg BSA per 1 μg hIL-17A. Carrier free: Lyophilized from a 0.22 μm filtered solution of PBS, pH 7.2.
Stable in lyophilized state at -20°C for 1 year after receipt. Sterile stock solutions reconstituted with carrier protein are stable at 4°C for 2 months and at -20°C for 6 months. Avoid repeated freeze-thaw cycles. Maintain sterility. Storage at -20°C should be in a manual defrost freezer.
|Purity||>97% as determined by SDS-PAGE of 6 μg reduced (+) and non-reduced (-) recombinant hIL-17A. All lots are greater than 97% pure|
|Endotoxin||Less than 0.01 ng endotoxin/1 μg hIL-17A.|
|Activity||The bioactivity of recombinant hIL-17A was determined by its ability to induce IL-6 production by primary human fibroblasts. The ED50 of each lot is between 1.5 - 3.5 ng/ml.|
|Molecular Formula||Recombinant hIL-17A contains no "tags" and the nonglycosylated protein has a calculated MW of 15,535. DTT-reduced protein migrates as a 16-24 kDa polypeptide. Heterogeneity in SDS PAGE is due to glycosylation. The non-reduced cystine-linked homodimer migrates as a 28-37 kDa protein. The expected amino-terminal IVKAG of recombinant hIL-17A was verified by amino acid sequencing.|
Recombinant human IL-17A (hIL-17A) Ile20-Ala155 (Accession #NP_002181) was expressed in human 293 cells at Cell Signaling Technology.
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